Is this the beginning of the end of Ebola? We hear about an experimental vaccine that shows promise. We also hear how Latin America is becoming increasingly dangerous — and deadly — for journalists. Plus, an international supermodel is photographed visiting her plastic surgeon in Paris, dressed head-to-toe in a burqa.

A large piece of an airplane wing was found on the Indian Ocean island of Reunion. Authorities are examining the piece to see if it might be from Malaysia Airlines Flight 370, which went missing more than a year ago with 239 passengers and crew on board. Plus, can you treat gun violence like an infectious disease? A program called Cure Violence thinks you can, both in the United States and abroad. Also, comedian Aziz Ansari took a brief tour of the world for his new book Modern Romance: An Investigation. Ansari checked out the single's scene in Tokyo, Buenos Aires and Paris and the way folks meet, date and tie the knot.

Sources in the Afghan government say they're investigating claims that Taliban leader Mullah Omar has died. Plus, Cecil the Lion, a beloved figure in a Zimbabwean game reserve, was killed by a dentist from Minnesota who paid more than $50,000 to hunt game in Zimbabwe. Also, Boston has taken itself out of the running for the 2024 Summer Olympics — and that might be good news for Toronto.

An investigation by a Reuters reporter shows there's been a strange spike in cancer cases among employees at the Guantanamo Bay detention facility. Plus, the son of former Libyan dictator Muammar Gaddafi, has been sentenced to death by a court in Tripoli for war crimes committed during the revolution in 2011. Also, the International Association of Athletics Federations says it will no longer gender test athletes. That's a victory for an Indian sprinter.

The United States says it's working with Turkey to create an "ISIS-free zone" in northern Syria. It marks a major shift in policy for both countries. But will the intervention make a difference? Plus we find out why every July Korea's professional basketball league makes Las Vegas its temporary home. And a reporter is spending the next few weeks with scientists on a glacier in Greenland.

President Obama arrived in Kenya Friday for a two-day visit, before heading to Ethiopia on Sunday. He's been outspoken in his criticism of Kenya when it comes to the way the country treats gay people, but are his words making any difference? Plus, after three decades, a vaccine against malaria has been approved for use. But critics say its only 30 percent effective, and there are concerns that it may prove too expensive for many of those afflicted to afford. And, Republican presidential candidate Donald Trump caused a big stir when he took his show on the road to the US-Mexico border. We check in with a Mexican journalist and activist to learn how that went down on the Mexican side.

President Obama headed to Kenya and Ethiopia, we'll be taking a look at his legacy in Africa. Filling in for Marco Werman in the host chair is Aaron Schachter today. He speaks with Laura Seay, a professor at Colby College who focuses on US foreign policy in Africa. And our BBC colleague Nkem Ifejika in Kenya introduces us to Suzie Wokabi, founder of Suzie Beauty, a Kenyan cosmetics firm. She decided to return home after living in the US.

People in Kenya get ready for a visit from President Barack Obama, and that means a lot of security prep. Plus, Russia increases pressure on NGOs, and an American foundation says it's leaving the country. Also, we hear about allegations of doping in the Tour de France, but it's not the cyclists — it's their bicycles.

What's it like to try to track down and interview Mexico's most notorious drug lord? A couple of years ago, before "El Chapo" Guzman's latest arrest, two filmmakers tried to find him. Their documentary, "Drug Lord: The Legend of Shorty," airs tonight, courtesy of our partners at Frontline. It's timely, given El Chapo's escape from prison for the second time last week. Also, the nuclear deal with Iran has plenty of detractors in Washington, but that's nothing compared to how some of Iran's neighbors feel about it. Plus, a winner has been crowned in the annual French Scrabble competition. But quelle surprise — the winner's not French, or even a French speaker.

For the first time in decades, the American flag flew outside of a building in Havana, a Cuban flag flew outside a building in Washington, and just like that, two embassies re-opened. Also, for the first time in three weeks, banks opened in Greece. On the downside, new taxes went into effect, aimed at easing Greece's crushing debt. Plus, we'll hear from a Mexican American cartoonist on the (supposed) Twitter war between Republican presidential candidate Donald Trump, and Mexican drug kingpin Joaquin "El Chapo" Guzman.